Dominique Strauss-Kahn, the scandal-plagued former head of the International Monetary Fund (IMF), is once again at the centre of a legal battle, French media revealed on Friday.

Strauss-Kahn is under preliminary investigation over allegations of “fraud” and “misuse of company assets” at the now-defunct investment firm Leyne Strauss-Kahn Partners (LSK).

Two former LSK shareholders have filed lawsuits against the company’s managers, including Strauss-Kahn, alleging that they lied about the financial state of the Luxembourg-based business.

Strauss-Kahn became a board member of LSK in October 2013 and temporarily became the firm’s president before stepping down from the post one year later.

LSK declared bankruptcy in November 2014, a few weeks after founder Thierry Leyne committed suicide in Tel Aviv.

Strauss-Kahn’s lawyer told France Inter radio on Friday that his client “never had operational responsibilities” within the company, and that Strauss-Kahn’s signature had been forged on the minutes from several board meetings he had not attended.

The former IMF chief has faced a series of legal charges since 2011, but has thus far avoided conviction. A French court in June acquitted him of procuring prostitutes for sex parties in France, Belgium and the United States.